Combined faucet and relief-valve.



E. S. STACK Patented Dec. 4, 1917.

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ave embodie ELMEE S. STACK, OF WEST SOMEItVILLE,MASSACHUSETTS.

COMBINED FAUCET AND RELIEF-VALVE.

To all whom it may concern; a

'Be it known that I, Emma S. STACK, a citizen of the United States, and resident of West Somerville, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Combined Faucets and Relief- Valves, of which the following is a specification.

The present invention relates'to a fitting or attachment for water systems adapted to serve as a deliver faucet for any part of such system, and rther adapted to be connected with a hot water service pipe to perform the additional function of a relief valve to permit escape of the water and relief of pressure in case the temperature and pressure should become sohigh as to injure the integrity of any part of the system. The exact nature of the invention and the novel principles and features which are involved therein appear from the following detailed description and the annexed illustration of a articular device in which I d these principles and features.

In the accompanying drawings,

f a particular device in w ich I have em- Figure 1 is a vertical lon itudinal section odied my .invention. 7

Fig. 2 is a vertical cross section. on line 2--2 of Fig. 1.

Fig. 3 is a horizontal section on line 3-3 of Fig. 1.

Fig. 4 is a partial elevation and section on line H of Fig. 1 looking in the direction of the arrows.

Figs. 5 and 6 are views similar to Figs. 1 and 2, respectively, showing the valveof the fitting in its opened position, the preceding figures showing the valves closed.

Fig. 7 is a perspective view of the member which constitutes the valve proper of Speciflcation of Letters Patent.

out of the orifice 16.

any other way.

livery tube 13, these parts being in general similar to the corresponding parts of the usual water faucet. The communication between the inlet tube and the body or main chamber 14 of the casing is made through a nozzle 15 which extends from the inlet tube into the center of the casing and has an Patented Dec. d, i212. I

. Application filed ch ,7, 1916. Serial No. 82,572.

upwardly directed delivery orifice 16 mp rounded by a lip 17, which. forms a valve seat. The end of the nozzle is connected with the outer wall of the chamber 14 by a web 18 provided simply to secure strength,

.but there are wide open spaces 19 between the nozzle and outer walls at each side, as shown in Fig. 2, through which the water may flow freely as rapidg) as it can pass nveniently the parts thus described are all made as a single casting, the upper partof which is formed py an open internally ,threaded tubular A bonnet21 which has an externally threaded terminal lip 22 is fitted in the lip 20 and is screwed down until a bead or shoulder 23 bears firmly against the end of the lip 20 and makes a tight 'oint. The interior of the bonnet 21 is ormed 'with a chamber 24: in which is partially contained a valve 25, the latter making a sufliciently close fit with the walls of the chamber .and

being adapted to rotate and move endwise- I therein. A valve stem 26 extends from the valve through the upper end of the bonnet 21 in which it has a sufliciently close sliding fit, and on the end of this spindle is secure a handle 27 in any ordinary or desired way,

which handle ma be any one of those mm" monly used for aucets and valves, or may have any other desired character. A spring 28 surrounds the valve stem and is contained within the chamber 24, pressing at one end against the valve 25 and reacting at its other end against the end wall 29 of the valve casing. The valve 25 overlies the orifice 16 of the inlet nozzle and is firmly pressed against the seat formed by the lip 17 of such nozzle,

by the sprin 28. Preferably the valve is provided wit a packing or washer'30 secured by a screw 31, to make a leakage tight joint with the valve seat, although 0 course the washer is a detail which may be omitted if a sufiiciently ti ht joint can be made in he end of the valve next to the nozzle is formed with a flange or ll 32 which surrounds the valve seat 17 an a face extending to different extents beyond that surface of the valve which makes conbeforethe pressure becomes eat enough to threaten bursting of the boi er, or heater, or any of the pipes and connections.

The fact that this relief valve also a tact with the seat. The preferred form of faucet makes it superior to the ordinary 70 the cam surface 33 is clearly indicated by spring loaded relief valves for watersystems. the drawing, and particularly by Figs. 2, The ordinary relief valve isnot opened except 5, 6, and! thereof. In general the form of on occasions when the pressure becomes exthis surface is that of a helix, although not cessive, consequently if such occasions are necessarily of regular and uniform pitch. few and far between there is a possibility 75. The exact curvature of the cam surface is a of the valve becoming stuck in its casing or feature which can be designed variously ac- I to the seat, by reason of corrosion, collection cording to the requirements of the ClICllIIlof sediment, formation of scale, and many stances in which any particular form of the other causes. When such a valve becomes device may be used. stuck in its closed position it will not open 80 I The cam rib 32 extends over the nozzle at the pressure for which it is designed,

15, and the highest part of the cam, that is and therefore becomes not only useless but the part which rojects least from the seat-= worse than useless, because of the reliance ing surface of t e valve, has a less amount placed upon it.

of projection than the projection of the The benefit which arises from the fact 35 valve from the upper side of the nozzle. that my relief valve is also a faucet, is that, 1: Therefore when th1s part is over the nozzle, being a faucet, it is in constant use and which is the position'shown in Figs. 1, 2, therefore is kept in free working ord r, and 4, the cam is disengaged from the noz- The rotation which is given to the valve 25 ale and the seating face of the valve is whenever it is opened and closed frees the pressed against the valve seat by the full valve in the case, preventing it from stickforce of the spring 28. When the valve ing there, and also rubs and cleans the conhandle is turned the downwardly inclined tacting surfaces of the valve and seat, so cam surface is carried over and into'contact that no sediment, scale, corrosion or other 30 with the nozzle, thereby causing the valve cause of sticklng may form or collect. tobe lifted from the valve seat, until when As a faucet my novel device has certain turned into v approximately the position advantages in that the arrangement of the shown in Figs. 5 and 6, the deepest part of nozzle with respect to the valve keeps the the cam bears on the nozzle and causes seating face of the valve clean by reason of 85 separation of the valve from the seat to the thescouring action of the water jet iss'uin greatest possible extent. In that position from the nozzle, and the gradual inclination the valve is fully opened and the maximum of the cam surface 33 makes it possible to flow of liquid is permittedto take place. turn the valve handle from opened to close The above described characteristics of the position as rapidly as may be desired wit 40 valve adapt it to serve all the uses of a out danger of 'a water hammer action being faucet perfectly. In addition the spring set up. It Wlll be noted particularly from which yieldingly holds the valve seated Figs. 2, 5 and 7 that the cam inclination when in its closed position permits the valve for a conslderable distance from the highest to be removed from the seat under excessive point of the cam is very gradual and slight,

45 pressure and thereby permits escape of sufliwhereby the handle mustbe turned through cient water to relieve the pressure. Thus a w1de angle before the valve seats after the faucet is also a relief valve adapted to beingv so nearly seated as to materially rebe connected with any pipe in which the strlct the flow. This construction prevents pressure is subject to fluctuations and is instantaneous closing of the valve from a 60 liable to exceed a safe amdunt, such'as the w1de opened p9s1tion, -whereby the water hot water pipe of a plumbing system which hammer action 1s made impossible. is connected with the heater or boiler where- There is no'need of packing between the in the water is heated. Where such a Sysvalve and the walls of the valve casing or tem is a closed one, and is entirely 'filled' between the valve rod and the opening in 55 with water, it is necessary to provide some the end wall, of the valve casing, but these 12%) sort of a relief to permit escape of water parts may be'made with a sufficiently loose at times when the water gets so hot as to fit to permlt of their movement with the have its pressure raised beyond the safe utmost freedom. The chamber 14 in the point. The valve or faucet hereinbefore defaucet belng open at the bottom and having 60 scribed performs all the functions of such a an inlet smaller than its outlet there is prac- 65 made of such a strength that it will yield which is deflected downwardly by the cylinrelief valve, opening sufficiently to permit escape of water when the pressure due to.

heating becomes great enough to overcome the spring 28. Sald spring is naturally tically no opportunity for back pressure to accumulate and no tendency to force the water past the valve and the valve stem; and besides, the tendency of the jet of water,

drical cam 32, is to draw out any water which may be in the upper part of the chamber. Hence there is no tendency toward leakage past the valve and valve stem and no necessity for packing, which might have the effect of impeding the desired free movement of the valve.

It is to be understood that I contemplate makin various modifications in the structure 0% the fitting without departing from the invention and within the scope and spirit of the appended claims. For example, instead of making the cam outside of the valve seat, it might be possible to make the valve seat and cam of the same radius, having the seat offset complementally 0 the cam surface, whereby the valve won (1 be closed in one position and opened in all other positions. Again, modifications may be made in the arrangement of the nozzle. It is not essential that the cam should operate by engaging the nozzle directly, for the part of the nozzle which is engaged by the cam is simply an abutment for the cam, and

its place might be taken by an abutment of any other character arranged in any other manner in connection with a nozzle located otherwise than as here shown.

What I claim and desire to secure by Letters Patent is:

1. A faucet comprising a casin a nozzle extending into said casing and aving an orifice, a rotatably mounted valve arranged to seat on the rim of said orifice, means constantly pressing said valve yieldingly to: ward said rim, the valve being otherwise free to move away from the orifice, means for rotating said valve about an axis trans-- verse to the plane of its seating surface, said valve being arranged in part as a cam having points variously distant from a plane erpendicular to its axis, and the nozzle a fiaving an abutting ortion for engagement with said cam, where y rotation of the valve causes the same to be respectively seated and unseated.

2. In afaucet, an inlet nozzle having an orifice at one side and a seat surrounding said orifice, a rotatably mounted valve in line with the orifice arranged to oo-act with said seat, said valve being in part axially extending cam surrounding said s at and extending across the nozzle, different points 7 of said cam extending different distances beyond the plane of the valve seat, a handle connected with the valve for rotating the same, and a spring bearing on the valve and pressing it toward the seat, said cam being caused by rotation of the handle to engage the nozzle and thereby displace the valve from the seat.

3. A faucet comprising a casing, a bonnet mounted in one side of said casing having a chamber, a valve fittin freely in the inner end of said chamber and having a stem ex tending out through the end of the bonnet, a nozzle entering the valve casing having an orifice directed'toward said valve, the rim of which orifice forms a seat with which the ad acent face of the valve co-acts, a spring acting on said valve forcing the same toward said seat, and a cam element on the valve surrounding the seat, different points of said cam extending to different distances from the plane of the seat, the casing having an abutment whereon said cam bears when the valve i turned.

4. A combined faucet andrelief valve comprisin a casing having an admission nozzle wit a seatin face surrounding the orifice thereof, a va ve stem entering the casing and having a valve on its inner end which co acts with said seating face, a sprin pressing said valve toward said seating ace, the valve having an axially extending annular rib surrounding said face, the extremity of said rib forming a cam of which different points are located at difi'erent distances from the plane of said seating face, and an abutment for said cam ar .ranged in position to be enga ed thereby when the valve is turned, where y to cause unseating of the valve and permit seating thereof, the valve being also adapted to yield away from the seating face when acted aupon by excessive pressure of fluid in the signature, lnpresence of two witnesses.

Witnesses: Y

ARTHUR-H. BROWN, Pn'rnn W. zrn'rr.

nLMEn s: s'raox. 5 

